So, I'm going to hopefully bust out 2 brews this weekend, but I'm looking to the future.

I'm looking for a recipe that I can experiment with. I want to make a clean batch of it to have as a base, and then perhaps make another 5-6 gallons of it and break it up into multiple 2gal batches maybe (havent thought it through), and experiment with either adding fruits, spices, other flavorings and, more importantly, hop types, yeast types, etc.

So, I'm looking for a barebones base ale I would think? Something preferably tasty out the gate, but will be willing to have some variance in flavors without being too off putting.